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<base href="https://bugs.webkit.org/" />
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<body><table border="1" cellspacing="0" cellpadding="8">
<tr>
<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Null dereference loading Blink layout test fast/parser/xhtml-dom-character-data-modified-crash.html"
href="https://bugs.webkit.org/show_bug.cgi?id=149485">149485</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>Null dereference loading Blink layout test fast/parser/xhtml-dom-character-data-modified-crash.html
</td>
</tr>
<tr>
<th>Classification</th>
<td>Unclassified
</td>
</tr>
<tr>
<th>Product</th>
<td>WebKit
</td>
</tr>
<tr>
<th>Version</th>
<td>WebKit Nightly Build
</td>
</tr>
<tr>
<th>Hardware</th>
<td>Unspecified
</td>
</tr>
<tr>
<th>OS</th>
<td>Unspecified
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Keywords</th>
<td>BlinkMergeCandidate, HasReduction, NeedsRadar
</td>
</tr>
<tr>
<th>Severity</th>
<td>Normal
</td>
</tr>
<tr>
<th>Priority</th>
<td>P2
</td>
</tr>
<tr>
<th>Component</th>
<td>XML DOM
</td>
</tr>
<tr>
<th>Assignee</th>
<td>webkit-unassigned@lists.webkit.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>jhoneycutt@apple.com
</td>
</tr>
<tr>
<th>CC</th>
<td>webkit-bug-importer@group.apple.com
</td>
</tr></table>
<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=261779" name="attach_261779" title="crashing test">attachment 261779</a> <a href="attachment.cgi?id=261779&action=edit" title="crashing test">[details]</a></span>
crashing test
Null dereference loading Blink layout test parser/xhtml-dom-character-data-modified-crash.html.
Test added in <a href="https://codereview.chromium.org/1267283002">https://codereview.chromium.org/1267283002</a>.
Stack trace:
Crashed Thread: 0 Dispatch queue: com.apple.main-thread
Exception Type: EXC_BAD_ACCESS (SIGSEGV)
Exception Codes: KERN_INVALID_ADDRESS at 0x0000000000000000
Application Specific Information:
CRASHING TEST: temp-tests/fast/parser/xhtml-dom-character-data-modified-crash.html
This process is running with libgmalloc.dylib (GuardMalloc) which may have forced the crash due to a memory access error.
Global Trace Buffer (reverse chronological seconds):
48.335848 CFNetwork 0x00007fff88d445cd Creating default cookie storage with process/bundle identifier
48.335848 CFNetwork 0x00007fff88d44565 Faulting in CFHTTPCookieStorage singleton
48.335855 CFNetwork 0x00007fff88ba7b49 Faulting in NSHTTPCookieStorage singleton
Thread 0 Crashed:: Dispatch queue: com.apple.main-thread
0 com.apple.WebCore 0x0000000107361a52 WebCore::XMLDocumentParser::endElementNs() + 130 (XMLDocumentParserLibxml2.cpp:887)
1 libxml2.2.dylib 0x00007fff8c5a1d16 xmlParseEndTag2 + 917
2 libxml2.2.dylib 0x00007fff8c5a42fe xmlParseTryOrFinish + 3216
3 libxml2.2.dylib 0x00007fff8c5a3479 xmlParseChunk + 905
4 com.apple.WebCore 0x000000010736064b WebCore::XMLDocumentParser::doWrite(WTF::String const&) + 475 (Vector.h:634)
5 com.apple.WebCore 0x000000010735e590 WebCore::XMLDocumentParser::append(WTF::PassRefPtr<WTF::StringImpl>) + 208 (StdLibExtras.h:366)
6 com.apple.WebCore 0x0000000106586565 WebCore::DecodedDataDocumentParser::appendBytes(WebCore::DocumentWriter&, char const*, unsigned long) + 117 (StdLibExtras.h:366)
7 com.apple.WebCore 0x00000001065cf051 WebCore::DocumentLoader::commitData(char const*, unsigned long) + 657 (DocumentLoader.cpp:857)
8 com.apple.WebKitLegacy 0x0000000108a3ea82 -[WebHTMLRepresentation receivedData:withDataSource:] + 98 (WebHTMLRepresentation.mm:198)
9 com.apple.WebKitLegacy 0x0000000108a0d7a0 -[WebDataSource(WebInternal) _receivedData:] + 64 (WebDataSource.mm:242)
10 com.apple.WebKitLegacy 0x0000000108a2af9d WebFrameLoaderClient::committedLoad(WebCore::DocumentLoader*, char const*, int) + 109 (WebFrameLoaderClient.mm:1014)
11 com.apple.WebCore 0x00000001065d0b01 WebCore::DocumentLoader::commitLoad(char const*, int) + 145 (DocumentLoader.h:225)
12 com.apple.WebCore 0x00000001063fb250 WebCore::CachedRawResource::notifyClientsDataWasReceived(char const*, unsigned int) + 160 (CachedResourceClientWalker.h:51)
13 com.apple.WebCore 0x00000001063fb121 WebCore::CachedRawResource::addDataBuffer(WebCore::SharedBuffer&) + 145 (CachedRawResource.cpp:70)
14 com.apple.WebCore 0x0000000107175f8a WebCore::SubresourceLoader::didReceiveDataOrBuffer(char const*, int, WTF::PassRefPtr<WebCore::SharedBuffer>, long long, WebCore::DataPayloadType) + 218 (SubresourceLoader.cpp:292)
15 com.apple.WebCore 0x000000010717603c WebCore::SubresourceLoader::didReceiveBuffer(WTF::PassRefPtr<WebCore::SharedBuffer>, long long, WebCore::DataPayloadType) + 44 (StdLibExtras.h:366)
16 com.apple.WebCore 0x000000010700ea7c WebCore::ResourceLoader::didReceiveBuffer(WebCore::ResourceHandle*, WTF::PassRefPtr<WebCore::SharedBuffer>, int) + 44 (StdLibExtras.h:366)
17 com.apple.WebCore 0x00000001072f2f6a -[WebCoreResourceHandleAsDelegate connection:didReceiveDataArray:] + 106 (StdLibExtras.h:366)
18 com.apple.CFNetwork 0x00007fff88c5c622 __65-[NSURLConnectionInternal _withConnectionAndDelegate:onlyActive:]_block_invoke + 69
19 com.apple.CFNetwork 0x00007fff88c5c49e -[NSURLConnectionInternal _withConnectionAndDelegate:onlyActive:] + 233
20 com.apple.CFNetwork 0x00007fff88c5c3a3 -[NSURLConnectionInternal _withActiveConnectionAndDelegate:] + 48
21 com.apple.CFNetwork 0x00007fff88da98fc _NSURLConnectionDidReceiveDataArray(_CFURLConnection*, __CFArray const*, void const*) + 82
22 com.apple.CFNetwork 0x00007fff88c5cc61 ___ZN27URLConnectionClient_Classic29_delegate_didReceiveDataArrayEv_block_invoke + 145
23 com.apple.CFNetwork 0x00007fff88d3ad5f ___ZN27URLConnectionClient_Classic18_withDelegateAsyncEPKcU13block_pointerFvP16_CFURLConnectionPK33CFURLConnectionClientCurrent_VMaxE_block_invoke_2 + 100
24 libdispatch.dylib 0x00007fff96096331 _dispatch_client_callout + 8
25 libdispatch.dylib 0x00007fff960ac9ad _dispatch_block_invoke + 474
26 com.apple.CFNetwork 0x00007fff88bb67f4 RunloopBlockContext::_invoke_block(void const*, void*) + 24
27 com.apple.CoreFoundation 0x00007fff949aeff4 CFArrayApplyFunction + 68
28 com.apple.CFNetwork 0x00007fff88bb66ed RunloopBlockContext::perform() + 137
29 com.apple.CFNetwork 0x00007fff88bb64c4 MultiplexerSource::perform() + 282
30 com.apple.CFNetwork 0x00007fff88bb62e6 MultiplexerSource::_perform(void*) + 72
31 com.apple.CoreFoundation 0x00007fff949e2c01 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 17
32 com.apple.CoreFoundation 0x00007fff949d4b1c __CFRunLoopDoSources0 + 556
33 com.apple.CoreFoundation 0x00007fff949d403f __CFRunLoopRun + 927
34 com.apple.CoreFoundation 0x00007fff949d3a38 CFRunLoopRunSpecific + 296
35 DumpRenderTree 0x0000000104bf0eb3 runTest(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&) + 2146 (DumpRenderTree.mm:2031)
36 DumpRenderTree 0x0000000104bf041a dumpRenderTree(int, char const**) + 2928 (DumpRenderTree.mm:1288)
37 DumpRenderTree 0x0000000104bf1a2a DumpRenderTreeMain(int, char const**) + 1471 (DumpRenderTree.mm:1424)
38 libdyld.dylib 0x00007fff93aa15ad start + 1</pre>
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